SCCM Helpful Links
How to Configure Windows Server 2008 for Site Systems
https://technet.microsoft.com/en-us/library/cc431377.aspx
Network Diagram for Internet-Based Servers - Scenario 1 with SQL Server Replica
https://technet.microsoft.com/en-us/library/bb693632.aspx
Configuration Manager Site Capacity Planning
https://technet.microsoft.com/en-us/library/bb680869.aspx
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